CBSE Class 12 Chemistry Syllabus 2025-26
Official chapter-wise syllabus for CBSE Class 12 Chemistry — unit-wise marks distribution, list of deleted/reduced topics, and the 2025-26 exam paper pattern. Use this page alongside the Class 12 Chemistry preparation guide for full exam readiness.
2025-26
Academic Year
70
Theory Marks
30
Practical Marks
14
Total Chapters
Unit-Wise Marks Distribution
54 marks (theory)Unit I: Solutions
Solutions
9% of theory marks
Unit II: Electrochemistry
Electrochemistry
11% of theory marks
Unit III: Chemical Kinetics
Chemical Kinetics
9% of theory marks
Unit IV: d and f Block Elements
The d and f Block Elements
7% of theory marks
Unit V: Coordination Compounds
Coordination Compounds
11% of theory marks
Unit VI: Haloalkanes and Haloarenes
Haloalkanes and Haloarenes
7% of theory marks
Unit VII: Alcohols, Phenols and Ethers
Alcohols, Phenols and Ethers
7% of theory marks
Unit VIII: Aldehydes, Ketones and Carboxylic Acids
Aldehydes, Ketones and Carboxylic Acids
11% of theory marks
Unit IX: Amines
Amines
7% of theory marks
Unit X: Biomolecules
Biomolecules
7% of theory marks
Unit XI: Polymers
Polymers
6% of theory marks
Unit XII: Chemistry in Everyday Life
Chemistry in Everyday Life
6% of theory marks
Chapter-Wise Syllabus
14 chapters| # | Chapter | Marks |
|---|---|---|
| 1 | Solid State | 4 |
| 2 | Solutions | 5 |
| 3 | Electrochemistry | 5 |
| 4 | Chemical Kinetics | 5 |
| 5 | Surface Chemistry | 4 |
| 6 | General Principles of Isolation | 3 |
| 7 | p-Block Elements | 8 |
| 8 | d & f Block Elements | 5 |
| 9 | Coordination Compounds | 3 |
| 10 | Haloalkanes & Haloarenes | 4 |
| 11 | Alcohols, Phenols & Ethers | 4 |
| 12 | Aldehydes, Ketones & Carboxylic Acids | 6 |
| 13 | Amines & Biomolecules | 5 |
| 14 | Polymers & Chemistry in Everyday Life | 4 |
Deleted / Reduced Topics 2025-26
Note: The following topics have been deleted or reduced from the CBSE Class 12 Chemistry syllabus. Do not spend time studying these for the 2025-26 board exam. Always verify with the official CBSE syllabus document before your exam.
Solutions
Abnormal molar masses — van't Hoff factor derivation proof
Surface Chemistry
Entire chapter removed from board exam
General Principles and Processes of Isolation of Elements
Entire chapter removed
p-Block Elements
Entire chapter removed from Class 12 (moved to Class 11)
Exam Paper Pattern 2025-26
70 marks total| Section | Marks/Q | Count | Total | |
|---|---|---|---|---|
| Section A | 1 | 16 | 16 | |
| Section B | 2 | 5 | 10 | |
| Section C | 3 | 7 | 21 | |
| Section D | 5 | 3 | 15 | |
| Section E | 4 | 2 | 8 | |
| Total Theory Marks | 70 | |||
Practical / Internal Assessment Marks — assessed throughout the year by your school (projects, lab work, notebooks).
How to Use This Syllabus
Prioritise by marks
Use the unit-wise distribution above. Focus first on units with 20+ marks — they give the best return on study time.
Skip deleted topics
CBSE will not ask deleted topics in the board exam. Don't waste time on them — use that time for NCERT exercises instead.
Know the paper pattern
Section E (Case Study) has new-format questions many students ignore. Practise these separately — they're easy marks.
You know the syllabus. Now practise it.
ClearSteps gives you chapter-wise mock tests aligned to the exact CBSE Class 12 Chemistry syllabus, with AI evaluation against the official marking scheme.